CVE-2025-23384: CWE-187: Partial String Comparison in Siemens RUGGEDCOM RM1224 LTE(4G) EU
A partial string comparison vulnerability (CWE-187) exists in Siemens RUGGEDCOM RM1224 LTE(4G) EU and various SCALANCE devices before version 8.2.1 (or 3.2 for some models). The affected devices improperly validate usernames during OpenVPN authentication, potentially allowing attackers to have partial invalid usernames accepted by the server. The vulnerability has a low CVSS score of 3.7 and does not impact confidentiality or availability but may affect integrity. Siemens has released an official fix addressing this issue.
AI Analysis
Technical Summary
CVE-2025-23384 is a vulnerability in multiple Siemens RUGGEDCOM and SCALANCE router models that improperly validate usernames during OpenVPN authentication due to partial string comparison (CWE-187). This flaw allows partial invalid usernames to be accepted by the server, potentially undermining authentication integrity. The issue affects all versions prior to V8.2.1 (or V3.2 for some SCALANCE models). The vulnerability has a CVSS 3.1 base score of 3.7, indicating low severity with network attack vector, high attack complexity, no privileges required, and no user interaction. Siemens has issued an official fix for this vulnerability.
Potential Impact
The vulnerability could allow an attacker to bypass strict username validation during OpenVPN authentication by exploiting partial string comparison, potentially leading to acceptance of invalid usernames. This impacts the integrity of the authentication process but does not affect confidentiality or availability. No known exploits are reported in the wild.
Mitigation Recommendations
An official fix is available from Siemens. Affected users should upgrade their devices to version 8.2.1 (or 3.2 for certain SCALANCE models) or later to remediate this vulnerability. Applying the vendor-provided patch fully addresses the issue.
CVE-2025-23384: CWE-187: Partial String Comparison in Siemens RUGGEDCOM RM1224 LTE(4G) EU
Description
A partial string comparison vulnerability (CWE-187) exists in Siemens RUGGEDCOM RM1224 LTE(4G) EU and various SCALANCE devices before version 8.2.1 (or 3.2 for some models). The affected devices improperly validate usernames during OpenVPN authentication, potentially allowing attackers to have partial invalid usernames accepted by the server. The vulnerability has a low CVSS score of 3.7 and does not impact confidentiality or availability but may affect integrity. Siemens has released an official fix addressing this issue.
CVSS v3.1
Score 3.7low
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-23384 is a vulnerability in multiple Siemens RUGGEDCOM and SCALANCE router models that improperly validate usernames during OpenVPN authentication due to partial string comparison (CWE-187). This flaw allows partial invalid usernames to be accepted by the server, potentially undermining authentication integrity. The issue affects all versions prior to V8.2.1 (or V3.2 for some SCALANCE models). The vulnerability has a CVSS 3.1 base score of 3.7, indicating low severity with network attack vector, high attack complexity, no privileges required, and no user interaction. Siemens has issued an official fix for this vulnerability.
Potential Impact
The vulnerability could allow an attacker to bypass strict username validation during OpenVPN authentication by exploiting partial string comparison, potentially leading to acceptance of invalid usernames. This impacts the integrity of the authentication process but does not affect confidentiality or availability. No known exploits are reported in the wild.
Mitigation Recommendations
An official fix is available from Siemens. Affected users should upgrade their devices to version 8.2.1 (or 3.2 for certain SCALANCE models) or later to remediate this vulnerability. Applying the vendor-provided patch fully addresses the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- siemens
- Date Reserved
- 2025-01-15T07:34:32.934Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
Threat ID: 6a02f11dcbff5d8610c13cd7
Added to database: 05/12/2026, 09:21:33 UTC
Last enriched: 05/19/2026, 11:11:03 UTC
Last updated: 07/02/2026, 20:51:15 UTC
Views: 69
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